Moving-picture machine.



E. H. SPERB'ERG. MOVING PiQTUHE MACHiNE. APPucmoM HLED umzs. m3.

Patented June 1, 1915.

2 SHEETS-SHEET 2.

R O T N E V w.

EDWARD II. SPERBERG, OF KANSAS CITY, MISSOURI.

MQVING-PICTURE MACHINE.

Laris will enable others skilled in-the art to which 10 it appertains to make and use the same.

The primary object of this invention is to promote the efficiency and insure the safety of moving picture machines, and more specific'ally to provide improved means for preventing projected light rays from reaching the film when the latter or its controlling mechanism is being adjusted.

In the accompanyin drawings Figure 1 is a side elevation 0 a picture machine equipped with my present improvements. Fig, 2 is a horizontal section on line k2,

'Fig. 1. Fig. 3 is an enlarged view of the film casing and its shutter showing the door closed. Fig. 4 is a view at right angles to Fig. 3, the door being shown in its opened position in dotted lines.

The casing for the film operating mechanism (not shown) comprises opposite side walls 1 and 2 (Fig. 2), a front wall 3, and a rear Wall 4-, which latter is formed with the usual aperture to permit the light rays from the lamp to reach the film. The wall 1 has an upper extension for supporting the supper film magazine 5. This side wall 1 is attached supporting base 7, and to 1t is also attached the lower magazine 9. To

prevent ignition of the film, and; serious consequences should ignition occur, both the upper and lower magazines are provided with automatic closing means.

The opening to film-exp0sing portion of the casing protected by a door 18 which, While allowing the proper light to pass to the film, will automatically prevent the projected light and. heat from reaching the film when the door is partly. or fully opened, thus enabling'the attendant to access to the casing to adjust the film or its mechanism without danger of the light rays reaching t e film. This door is shown Fig. 2) in the f in of a right-angle; it is hinged at 19 to the rear edge of side Wall 1; its inner member is designed to it against wall 4. and its outer member against the side Wall 2, when the c or is in its closed position.

It has a swirling movement of 91')". Its

Specification 01' Letters Patent.

Patented June 1, 1915.

Application filed December 23,1913. Serial No. 808,378:

a latch 90 for influence of a spring 22 secured to the door at 23. The inner member of the door is provided. with an opening 24 which coincides with an opening 25 in the rear Wall 4. This door 18 carries an automatic shutter 27, which is pivoted at 26 and is under control of a spring 30 secured to the shutter at 31 and to' the door at 32. Normally the aperture 33 of the shutter is out of alinement with apertures 24 and 25 in the door and easing, the movement of the shutter into aperture-closing position being limited by a stop 2-8 on the door in the path of a log 29 of the shutter. (See Fig. 3;)- When the door 18 is closed and the shutter is moved into the ex posing position a lug 34 of theshutter engages a pin 35 projecting from the casing through anopening 36 in the door and holds the shutter in position with its aperture coincident with apertures 24. and 25. latch 20 is released the slightest opening movement of the-door will disengage lug 3&-

outer angular member carries engaging a pm 21 under the :trom pin'3 5, and the shutter will instantly move to its'closing position, under the re coil of its spring, thereby light projected through apertures 24 and 25.

or the door is swung fully open, and while moving-into that position, the outer member of the door will practically close the end of he Fig. 2) and by intersecting the path of the light rays will prevent projected light from reaching the film through apertures 24 and 25, and hence the film or its mechanism may be adjusted in safety. lVhen the door 18 is again closed the shutter 27 must be moved manually into aperture-exposing position before the light can project through the apertures.

The advantages of my invention will be readily appreciated by those skilled in the art. It will be observed that by means thereof, the danger of a film being ignited and of the serious consequences arising from ignition are greatly if not wholly eliminated.

Having described my invention, what I claim as new and desire to secure by Lethen I shutting oil the projecting apparatus (see- 

